Introducing the Mulberry Dorothy Bag. The Dorothy Bag is part of Mulberry Resort 2015 Collection. It has a classic design which features a flap front and Mulberry’s iconic postman’s lock closure. It has a single top handle and includes a long adjustable leather strap. The sides have buckle details that can also be adjusted, allowing the bag to be bigger or smaller, depending on how much you are carrying. The bag can carried in four kinds, as a handbag, on the crook of the arm, cross body or as a shoulder bag.